Mystery on Saturn's Satellite: Icy Debris Formed Iapetus' Ridge?
An approximate natural color mosaic of Saturn's moon Iapetus snapped by cameras on NASA's Cassini spacecraft, in Dec 2004, from about 173,000 kilometers (107,500 miles) away. Clearly visible (among other features) is the mysterious mountain range running precisely along the moon's equator.
Image Credit: NASA / JPL / SSI / Gordan Ugarkovic
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